Nese aul NATURAL HISTORY ' SucieTy OF WISCONSIN. VOL. II. No. 2. ES 1894. “= SIP WIDE IRS OF THE OF THE IFEUAMOUL SY NIT INU DAB BY George W. and Elizabeth G. Peckham. MILWAUKEE : NATURAL HISTORY SOCIETY OF WISCONSIN. NOv., 1894. SPIDERS OF THE MARPTUSA GROUP. GEORGE W. AND ELIZABETH G. PECKHAM. Preface. In the following paper we have attempted to classify the spiders formerly included under Marptusa and a few related genera. The group isso rich in closely allied species, and the genera run into each other so gradually, that to get a satisfac- tory classification it is necessary to make very close distince- tions. We have formed twelve new genera. We describe twenty-nine new species. We also re-define a few old species, which are generic types, the descriptions of which are not easily obtainable. We have had at our disposal large collections from North, Central and South America, and from the West Indies, as well as from Europe, North Africa, Madagascar and Australia; and smaller collections from India, Japan and the Malay Archi- pelago. Weare very deeply indebted to M. Eugéne Simon for his generous assistance in obtaining spiders from many parts of the world, and to Mr. Herbert H. Smith for the use of his large South American collection. We wish also to express our thanks to Mr. W. E. Broadway, who has sent us collections from Trinidad which are exceedingly valuable, from their containing not only many different species, but large numbers of individuals of each species; to Mr. B. K. Miller for some Japanese spiders, and to Mr. H. F. Wickham for a collection from the Bahama Islands. The measurements are given in millimeters. 86 PECKHAM. [Vol. 2, MARPTUSA THORELL. Plate VIIL., Figs. 1—1b, and 2—20. Spiders rather large and flat; abdomen large and wide, with central longitudinal light band. Colors usually dull. The cephalothorax is long, wide, flat and low. It is widest behind the dorsal eyes. The sides are more or less rounded, and are parallel as far as the second row of eyes. The quad- rangle of the eyes is about one-fourth wider than long, is equally wide in front and behind, or a little wider in front (in M. millerii, shghtly wider behind), and occupies very little more than one-third of the length of the cephalothorax. The eyes of the first row are small. This row is straight, or a little curved. The middle eyes are close together and are about twice as large as the lateral, which are usually well separated from them. The second row is half-way between the first and third rows, or a little nearer the first. The dorsal eyes are smaller than the lateral and form a row whichis plainly narrower than the cephalothorax at that place. These eyes are placed plainly on the upper surface of the cephalothorax, not on the sides, and are much further from each other than from the lateral borders. The legs are usually 1423 in the male and 4132 in the female, the second and third pairs being very nearly equal. This genus stands at the head of the group. It is most likely to be confused with Breda, as the colors, markings and general appearance are very similar, but Breda is not quite so flat either in the cephalothorax or the abdomen, and has the middle eyes of the first row much larger and more prominent, while the cephalic part is relatively a little longer, occupying nearly two-fifths of the cephalothorax. In Mendoza the species are smaller and are not at all flattened, and the quadrangle of the eyes is wider behind. The shape of the cephalothorax differs from that of Epinga. No. 2.] SPIDERS OF THE MARPTUSA GROUP. 87 It is also near Menemerus, but in this latter genus the species are somewhat smaller, while the cephalothorax is higher, and not so flat, and is dilated on the sides. The cephalic part is relatively a little longer in Menemerus, occupying nearer two- fifths than one-third, and the third row of eyes is nearly as wide as the cephalothorax at that place, the eyes being about equally distant from each other and from the lateral borders, instead of much further from each other, as in Marptusa. It differs from Bayia in being flat and in being longer in proportion to its width. Bavia has the sides and back of the thoracic part rounded and the abdomen is narrow, rounded, and tapering behind. Marptusa is easily distinguished from Icius, as in the latter genus the species are much smaller and the cephalothorax is not so much flattened above, both cephalic and thoracic parts being somewhat inclined from the dorsal eyes. We have, in our collection, eight species belonging to the genus Marptusa. These are mucosa Cl., the type (Marpissa mucosa Simon, Arachnides de France, Vol. III., p. 25), from France and Holland; melanognathus Luc. (Menemerus me- lanognathus Peckham, N. A. Spiders of the Family Attide, p. 82), from Japan, Madagascar, Mauritius (Attus muscivorus Vin- son, and Attus nigro-fuscus Vinson), Canary Islands, Santarem, Brazil, French Guiana (Attus planus Taez.), Guatemala and Florida; also familiaris Hentz {Marptusa familiaris Peckham, N. A. Attidse, p. 80); californica P. (N. A. Attidee, p. 81); poma- tia (Marpissa pomatia Wlk., Simon’s Arachnides de France, Vol. IIL, p. 26), from Southern Europe; and the four new spe- cies described in this paper, magna, agricola, broadwayi and millerii. MARPTUSA MAGNA SP. NOV. Plate VIIL, Figs. 3—8a. $. Length, 10. Length of cephalothorax, 4.3; width of cephalothorax, 3.2. @. Length, 12. Length of cephalothorax, 4.8 ; width of cephalothorax, 3.5. 88 PECKHAM. WO, 2, Length of large female, 14.5. The male is not quite mature. Legs in both sexes, 41 32 ; first and second pairs stoutest. The cephalothorax is long for this genus. The quad- rangle of the eyes is one-fourth wider than long, is a little wider in front than behind and occupies a little more than one- third of the length of the cephalothorax. The first row of eyes is straight; the middle eyes are sub-touching; the lateral, a little separated, the middle being less than twice as large as the lateral. The second row is a little nearer the first than the third. The third rowis much narrower than the cephalothorax at that place. The falces are vertical, and moderately long and robust. The cephalothorax is dark reddish-brown, blackish in the eye region. The dorsal surface is covered with white hairs, and there is a white band around the lower margin. On the eye region are numerous coarse, black hairs directed forward, and on each side, between the second and third rows of eyes, | are two bunches of black bristles. The hairs just above the first row of eyes arerufous. Inthe female the sides of the abdo- men are brown and the central portion is occupied by a her- ring-bone stripe of white, edged with black. In the male the entire dorsal surface of the abdomen is covered with white hairs, but the herring-bone stripe may be distinguished, as it is of a solider, purer white than the rest. In alcohol, the sides look brown, like those of the female. The legs are reddish- brown, not so dark as the cephalothorax. The palpi are red- dish, the palpi and clypeus having ‘many long, white hairs. The falces are dark brown, the under surface ight brown. We have one male and one female in the Smith collection, from Santarem, and several females from Central America (exact locality unknown). No. 2.] SPIDERS OF THE MARPTUSA GROUP. 89 MARPTUSA AGRICOLA SP. NOV. Plate VITI., Figs. 4—4e. $. Length, 6.5. Length of cephalothorax, 3; width of cephalothorax, 2. g. Length, 8. Length of cephalotorax, 4; width of cephalothorax, 2.8. Ileus, Gy 12! Gwe ©), Ail By, The quadrangle of the eyes is one-fourth wider than long, is wider in front than behind, and occupies two-fifths of the cephalothorax. The first row is bent, with the eyes all separated, the middle being less than twice as large as the lateral. The sec- ond row is about half-way between the first and third. The third row is much narrower than the cephalothorax at that place. The falces are short, vertical and rather stout, especially in the female; they are partly covered by some long, white hairs, which fall over them from the retreating clypeus. The cephalothorax is dark reddish-brown, with a band of white hairs above the anterior eyes, and some white and rufous hairs on the sides and behind. The abdomen is dark brown with a white foliated band down the middle. The legs are dark brown, banded with black. The palpi are brown, fringed with brown hairs in the male and with white hairs in the female. This species is shorter and broader than Marptusa magna, and its markings do not follow so closely, as that of magna, the regular Marptusa pattern. We have one male and one female in the Smith collection, from Brazil (Santarem). MARPTUSA BROADWAYI SP. NOV. Plate VIIL., Figs. 5—5bd. $. Length, 9. Length of cephalothorax, 3; width of cephalothorax, 2. @. Length, 8. Length of cephalothorax, 4; width of cephalothorax, 2.8. Legs, $, 1423; 9, 4132; first pair stoutest in both SEXES. 90 PECKHAM. [Vol. 2, The cephalothorax of the female is widened out more be- hind the eyes than that of the male. The quadrangle of the eyes is one-fourth wider than long, is wider in front than be- hind, and occupies two-fifths of the length of the cephalothorax. The first row is a little curved, with the eyes all separated, the middle being less than twice as large as the lateral. The sec- ond row is about half-way between the first and the third rows. The third row is much narrower than the cephalothorax at that place. The falces are vertical and moderately long and stout. The male has the cephalothorax dark reddish-brown, with the eye region almost black. The hairs are all rubbed off, ex- cepting a small bunch in the post-ocular depression and a few on the anterior sides. The abdomen is dark brown, with the upper central part occupied with a lighter colored herring-bone stripe, which is outlined in white. The legsand palpi are dark brown, the first and second pairs being almost black ; they all have short, white hairs, and the first and second pairs have long, black spines. The palpi have short, white hairs on the patallee and black hairs on the tarsi. The under surface is dark brown. The female resembles the male in markings, but is much lighter in color. The cephalothorax is almost covered with a mixture of white and rufous hairs, and there are many long, white hairs around the eyes, and hanging down over the dark, iridescent falces. The abdomen is hairier than that of the male and has a decidedly rufous tinge. The upper surface and the lower sides do not differ much in color, but the herring- bone stripe is marked by a black line with a white line inside it. The palpi are light brown, covered with long, white hairs. The legs are light brown. The mouth parts are dark brown, almost black, but the rest of the under surface is light brown. Of this species we have three females and two males, sent to us from the west coast of Trinidad, by Mr. W. E. Broadway. No. 2.] SPIDERS OF THE MARPTUSA GROUP. 91 MARPTUSA MILLERII SP. NOV. Plate VIII., Figs. 6—6a. @. Length, 13. Length of cephalothorax, 5; width of cephalothorax, 3.8. 6 (young). Length, 10.5. Legs, ¢, 1432; ¢, 4132; in both sexes the first pair is the stoutest and the others are nearly equal. The cephalothorax is low, broad and flat, with a depression behind the dorsal eyes. It is wider than the second and third rows of eyes in the cephalic part, but its widest point is in the anterior part of the thorax. The male is not so wide as the female. The quadrangle of the eyes is one-fourth wider than long, occupies about two-fifths of the cephalothorax and is very slightly wider behind, which is an exceptional thing in this genus. The first row is shghtly curved. The eyes are all sep- arated, the middle being nearly twice as large as the lateral. The second row is about half-way between the other two. There is a tuft of black hairs just behind the lateral eye. The males that we have are not quite mature, but the tar- sus of the palpus is very much enlarged and palette-shaped. The abdomen is rather broad and flat. The coloration varies considerably, but that of the females does not differ from that of the young males. The whole flat- tened upper surface of the body is gray, while the sides through- out the length of cephalothorax and abdomen are black. Looked at closely, the gray color is the result of a mixture of white and red hairs. There is a narrow band of shorter hairs of the same colors around the lower edge of the cephalothorax. Around the eyes of the first row are rings of bright red hairs and some long, black hairs. The clypeus and the palpus of the female are covered with very coarse, long, white hairs. On the abdomen are two pairs of lighter colored spots, surrounded by dark rings. In some examples the pattern comes out more dis- tinctly, the broad band down the middle of the abdomen being red, with the spots and the serrated edges pure white, and 92 PECKHAM. [Vol. 2, showing also behind the spots two or three pure white chev- rons. In these, also, the cephalothorax is red rather than gray. The legs are brown, the first pair a little the darkest, covered with black and white hairs. In this species the widening out of the cephalothorax is more decided than in mucosa, but is not so marked as in famili- aris. We have received numerous examples from Tokio, Japan, through the kindness of Mr. Isao Tjima. BREDA GEN. Noy. Rather large spiders. The cephalothorax is rather Hat, and is one-third wider than long. It is moderately high; the sides are rounded and widen out plainly at the anterior end, and still more behind the dorsal eyes. The thorax has a small plate above, which rounds off on the sides and behind. The cephalic part is a little inclined forward. The quadrangle of the eyes is one- fourth wider than long, is equally wide in front and behind, or a little wider in front, and occupies a little less than two-fifths of the cephalothorax.. The anterior eyes are large and promi- nent and form a straight row. The middle are sub-touching, and are barely twice as large as the lateral, which are a little separated from them. The second row of eyes isslightly nearer the first than the third. The dorsal eyes are about as large as the lateral and form a row which is narrower than the cephalothorax at that place. In Breda the abdomen isnot flattened, as in Marptusa, nor pointed behind, as in Epinga. Some of the species are much like Balmaceda, but in that genus the cephalothorax is flat- tened throughout nearly its whole length instead of having the thoracic part rounded, as in Breda. Breda differs from all the allied genera, excepting Marptusa and Epinga, in being so wide at the anterior end of the cephalo- thorax that the second row of eyes is plainly narrower than the cephalothorax at that place. This peculiarity is much more ex- aggerated in milvina than in Lubomirskil. No. 2.] SPIDERS OF THE MARPTUSA GROUP. 93 We found this genus upon an old species, Marpissa mil- vina C. Koch, described in Die Arachniden, XIII., p. 65. It in- cludes Marpissa Lubomirskii Taczanowski (Les Araneides du Perou, p. 219). Although Koch’s description and drawing of milvina are very good, we have thought it best to re-describe it, as we make it the type of a genus. BREDA MILVINA C. KOCH. Plate VIIL., Fig. 7—7b. @ Length, 13. Length of cephalothorax, 5.8; width of cephalothorax, 4. Some females are only 8 or 10 mm. long. Legs, 4132; the first, second and third are nearly equal in length; the first pair is the stoutest, the second next. The quadrangle of the eyes is equally wide in front and behind. The middle eyes of the first row are fully twice as large as the lateral and stand out very prominently. The labium is as wide as long and is one-half as long as the max- illee. The cephalothorax is dark brown, with the eye region black. In the post-ocular depression and extending backward from it are some white hairs, and there is a narrow white band around the lower border. Around the eyes of the first row are some stiff, upright, black hairs. On the clypeus are some long hairs, which are white, tinged with copper color. The falces are dark red-brown, with a few white hairs. The palpiand legs are brown and hairy, the first pair being the darkest. Theabdomen is brown and hairy. The sides are covered with white dots in the anterior part and with copper-colored dots behind. The upper dorsal surface has a longitudinal, angular band which is white in front and copper color behind, where it sends out some projections toward the sides. Underneath, near the spinnerets, there is, on each side, a distinct, round, white or copper-colored spot. 94 i PECKHAM. [Vol 2, In the young male the brown on the abdomen is replaced by black; there are no dots on the sides, and instead of copper color, the posterior part of the dorsal band is brilliant orange- red. The palpi are pale. C. Koch had this species from Bahia. We have numerous females from Santarem and twoimmature males from Trinidad, one from Port of Spain, and one from the East Coast. Breda Lubomirskii is not so high a spider as milyina, and has the quadrangle of the eyes a little wider in front than be- hind. Its total length is 9.5 mm. The length of the cephalo- thorax, 4, and the width of the cephalothorax, 2.5. The rela- tive length of the legs is 4312. We haye a single female from Monterico. HPINGA GEN. NOV. Large spiders. The cephalothorax is only moderately high ; in two of our species (chapoda and barbarica) it has a wide, heavy look ; in ornata it is narrower. It rises very slightly from the first row of eyes to the third row and then slopes backward to the poste- rior border. The sides begin to widen out just behind the lateral eyes, the widest point being just behind the dorsal eyes. The quadrangle of the eyes is only one-fifth or one-sixth wider than long. It is equally wide in front and behind, or is a little wider in front, and occupies two-fifths of the cephalothorax. The first row of eyes is straight, or a little curved. The middle are less than twice as large as the lateral. The second row is nearer the first than the third. The third row is plainly nar- rower than the cephalothorax at that place. The abdomen is cylindrical in front and pointed behind. This genus is very close to Breda, which is also found in Brazil, the only marked difference being that in Breda the shape of the cephalothorax is different, the thoracic part being higher and falling only slightly at first and then much more steeply, while in Epinga there is one long curve from the dorsal eyes to the posterior border. No. 2.] SPIDERS OF THE MARPTUSA GROUP. 95 Epinga has not the flat look which distinguishes Marptusa, the upper line of the cepalothorax being plainly curved and the abdomen nearly cylindrical. We have three species of this genus, chapoda and _ bar- barica, new, and ornata (Bavia ornata P., New Attidee from Guatemala, Proc. Nat. Hist. Soc. of Wisconsin, Dec., 1885, p. 8). This last species, although rather a large spider, is more slender and graceful than either of the others. EPINGA CHAPODA SP. NOV. Plate IX., Figs. 1—1f. $. Length, 12. Length of cephalothorax, 5; width of of cephalothorax, 3.5. @. Length, 14.5. Length of cephalothorax, 5; width of cephalothorax, 3.5. Legs, $ and @, 1423; those of the first pair are stoutest and longest, and are longer in the male than in the female, while they are stouter in the female than in the male. This is a large, heavy spider, with the abdomen cylindri- cal and about as wide as the cephalothorax. It is not so slen- der as Epinga ornata. The cephalothorax of the male widens out behind the dorsal eyes more than that of the female. The quadrangle of the eyes is one-fourth wider than long; is wider in front than behind, and occupies two-fifths of the cephalo- thorax. The anterior eyes are all separated; they form a shghtly curved row, the middle eyes being a little less than twice as large as the lateral. There is a tuft of black hairs above the lateral eye and another to the side and below it. The second row is nearer the first than the third. The third row is not so wide as the cephalothorax at that place. The palpus of the male has the patella and tibia nearly equal, and these. two joints together are about two-thirds as long as the tarsus. The falees are heavy and are slightly inclined forward. They are covered, in front, with long, coarse hairs. 96 PECKHAM. [Vol. 2, This is a very showy spider. The females and immature males have the cephalothorax black, covered with red hairsand silver scales ; no distinct pattern can be made out in our speci- mens, which areall more or less rubbed. The abdomen is red, with a wide, silver band around the anterior end and sides, and a silver band with indented edges down the middle. On each side, extending upward from the encircling band, are two oblique, silver bars. The only adult male in our collection is black, with patches of silver scales on the cephalothorax, and on the abdomen four or five transverse, silver bands, which become cheyrons in the posterior part. These silver scales are highly iridescent, showing green, blue and red tints. The legs are dark, with silver patches, the first pair being the darkest. From Chapoda, Brazil, in the Smith collection. In this species the thorax widens out more perceptibly in the male than in the female, while in Epinga ornata the dila- tation is much plainer in the female. EPINGA BARBARICA SP. NOV. Plate IX., Figs. 2—2a. g. Length, 15. Length of cephalothorax, 5.5; width of cephalothorax, 3.7. Legs, 41 23; first pair plainly stoutest, second next. This is a large, heavy spider. The quadrangle of the eyesis one-sixth wider than long, is almost equally wide in front and behind, and occupies two- fifths of the cephalothorax. The cephalothorax widens out considerably in the thoracic part. The sternum is long; the anterior coxee are almost touching. The labium is longer than wide. The abdomen is large and rounded, more like Bavia than Marptusa. The cephalothorax is dark brown. The cephalic plate is black with green and purple reflections. The middle of the abdomen is of a rather bright olive-green with a few iridescent scales—all that are left of the original covering. On each side is a longitudinal, brilliant red band, and, below this, a No. 2.] SPIDERS OF THE MARPTUSA GROUP. 97 band of snowy white. he first legs and the falces are black and somewhat iridescent, like the cephalic plate. The falces are well covered with black hairs, and, as they project a little forward, they are visible from above. The palpi and the second, third and fourth pairs of legs are light brownish- yellow, with white hairs. The mouth parts are black; the sternum cox and venter are light brown, the venter being marked, more or less distinctly, with three darker longitudinal lines. We have three females from Port of Spain, Trinidad, sent to us by Mr. W. E. Broadway. In the shape of the cephalo- thorax it is much like Epinga chapoda, although the slope from the dorsal eyes to the posterior border is not so unbroken and gradual a curve, as the second half falls a little more abruptly than the first half, looking something like Breda. In ornata the curve is smooth and unbroken, but is shorter than in chapoda or barbarica. DEZA GEN. Nov. Spiders rather long and narrow, with sides nearly parallel. First legs stout and dark colored. The cephalothorax is rather low. The cephalic and tho- racic parts are flat, and are on the same plane. The sides are nowhere parallel, but are only slightly dilated, the widest point being just in front of the third row of eyes, so that both the sec- ond and the third rows are narrower than the cephalothorax. The sides contract very gradually behind, the narrowest point being at the posterior end. The abdomen is no wider than the cephalothorax and is cylindrical, the whole appearance being long and graceful, although not especially slender. The quad- rangle of the eyes is only one-sixth wider than long, is wider in front than behind, and occupies nearly one-half of the ce- phalothorax. The anterior eyes are close together, in astraight row, and are prominent, especially the middle ones, which stand out conspicuously when the spider is looked at from above. The middle are more than twice as large as the lateral. The second row is nearer the first than the third row. The dorsal 98 PECKHAM. [Vol. 2, eyes are larger thanthe lateral. The falces are rather long and stout. The fangsarestout. The maxillee and labium are long. This genus is founded on Salticus sumptuosus Perty (Attus sumptuosus Walck. and Thiania sumptuosa C. Koch). It is related to Bavia and Epinga, but has the sides of the cephalothorax more nearly parallel and the middle eyes of the first row larger and more prominent. Its long, rather narrow body and enlarged first legs give it, to some extent, a resem- blance to certain species of Hyctia, but it is not so slender, and the middle eyes are larger than the lateral. DEZA SUMPTUOSA PERTY. Plate [X., Figs. 83—8e. ge. Length, 11. Length of cephalothorax, 5; width of cephalothorax, 2.5. 9. Length, 11.5. Length of cephalothorax, 4; width of cephalothorax, 2.7. Relative length of legs, of female, 1423; of male, 1423; first pair stoutest, especially in the female. The coloration exceeds in brilliancy that of any other species in this group. In the male the cephalothorax has for a ground color a covering of highly iridescent purple scales, on which is an elaborate pattern in iridescent silvery scales, with a prevailing tint of exquisite light green. This pattern, which will be best understood by a reference to the figure, con- sists of a large central spot just above the anterior eyes, which is connected on each side with a spot between the second and third rows of eyes; of a curved band behind each dorsal eye ; and of a band which encircles the cephalothorax, beginning on the face at each side of the anterior middle eyes. These sil- very scales, which in some lights show reflections of pink, blue and violet as well as of green, are found also on the front face of the falces, on the palpi and on the first pair of legs, which are darker in color than the other pairs. The abdomen has four transverse bands of these scales, which here, however, have rather a golden than a silvery tinge, alternating with four No. 2.] SPIDERS OF THE MARPTUSA GROUP. 99 bands of bright red. The posterior one of the iridescent bands is extended backward, in the middle line, to the spinnerets. The cephalothorax of the female is brown, with a lighter spot on the anterior thoracic part, and seems to have been covered with iridescent violet scales. The palpi and the second, third and fourth pairs of legs are light brown, the palpi having a bunch of white hairs on the tarsus. The first legs are bright brown, with some short, snow-white hairs. The abdomen is like that of the male. We have one female from Santarem, Brazil, in the Smith collection, and one male from Port of Spain, Trinidad, sent us by Mr. Broadway. BAVIA SIMON. Plate [X., Figs. 4—4. The cephalothorax is moderately high. The cephalic part rises very slightly to the dorsal eyes. The thoracic part is separated from the cephalic by a deep groove, behind which it is level for about one-fourth of its length, and then falls quite steeply. The cephalothorax is about equally wide at the an- terior and posterior ends, but is very much wider in the mid- dle, the widest point being just behind the dorsal eyes; it is about as wide as long. The quadrangle of the eyes is one-fourth wider than long, is wider in front than behind, and occupies a little less than one-half of the cephalothorax. The first row of eyes is bent; the eyes are all a little separated, the middle being twice as large as the lateral. The second row of eyes is plainly nearer the first than the third, and the third row is plainly narrower than the cephalothorax. The abdomen is narrow and small —a little higher and wider in front than behind. Our only spider under this genus is a male of Bavia eri- ceps, Simon, Ann. Soc. Entomol. de France, 1877, p. 61, from Manilla. LL. Koch described the same species from Australia, under the name Acompse suavis. Bayia is related to Marptusa, Breda and Epinga, but the width of the cephalothorax, in proportion to its length, sepa- rates’ it from all of these. 100 PECKHAM. [Vol. 2, BALMACEDA GEN. nov. Moderately long, slender spiders, with the cephalothorax and abdomen rather low and flattened. The cephalic and thoracic parts are in the same plane. The sides are almost vertical in the cephalic part and are a little dilated just behind the dorsal eyes. The thoracic part does not fall until it has nearly reached the posterior border, and the sides of this part are rounded. The ceph- alothorax is narrower at the anterior than at the posterior end. The quadrangle of the eyes is from one-fourth to one- third wider than long, is equally wide in front and behind or wider behind than in front, and occupies a little more than one-third of the cephalothorax. The first row of eyes is straight, the middle eyes are touching or sub-touching, the lat- eral are sub-tvuching ora little separated ; the middle are about twice as large as the lateral eyes. The second row is half-way between the first and third rows, or is nearer the first than the third. The dorsal eyes are further from each other than from the lower edge of the cephalothorax, and form a row which is not so wide as the cephalothorax at that place. Balmaceda is near Hyctia on the one hand, and Rudra on the other. Its general appearance, however, at once separates it from Rudra, as it is by no means so low and flat; the abdo- men, especially, being much thicker and more rounded. Itis also easily distinguished from Hyctia, as the abdomen is flattened, not cylindrical ; the cephalothorax has the appearance of being much wider in proportion to its length, and the sides are some- what dilated instead of being parallel. Balmaceda bracteata and Balmaceda modesta look very much, in general appearance, like Breda; but in Breda the caphalothorax, instead of being flattened, has the cephalic part inclined forward and the thoracic part rounding in all direc- tions from the small thoracic plate. We found this genus upon a new species from the east coast of Guatemala. It also includes a new species from Cen- tral America (punctata) and two old species, Marpissa modesta No. 2.] SPIDERS OF THE MARPTUSA GROUP. 101 Taczanowski (Araneides du Perou, p. 220), which we have from Amable Maria, and Marptusa bracteata L. Koch, from Aus- tralia (Arachniden Australiens, p. 1105), which agrees closely with the other species. BALMACEDA PICTA ‘SP. NOV. Plate X., Figs. 1—If. $. Length, 6. Length of cephalothorax, 2.8; width of cephalothorax, 2. 9g. Length, 6.8. Length of cephalothorax, 3; width of cephalothorax, 2. epswrsn 430) o), 41132) The quadrangle of the eyesis barely one-fourth wider than long ; it is about equally wide in front and behind, and occupies a little more than two-fifths of the cephalothorax. The second row of eyes is nearer the first than the third. The third row is not so wide as the ceph :lothorax at that place. The cephalo- thorax is rounded on the sides and behind. The cephalic and thoracic parts are on the same plane. ‘The falces are vertical, moderately stout and rounded. This is a rather large species. The first legs are moder- ately long and are a little the stoutest, but are not so decidedly thickened as in Balmaceda punctata. The abdomen is more slender than the cephalothorax. The general color is ightish brown. The cephalothorax is dark brown on the sides, with the central region reddish. There is a white band around the lower margin, a central white spot on the posterior thoracic slope, and some white hairs above on the cephalic part, and around the anterior eyes. The abdomen has the anterior half white or ght brown on the sides and dark brown in the center, while the posterior half is dark brown with a herring-bone stripe in white or light brown down the middle. The legs are light brown with darker rings at the joints. The palpi are light and the falces dark brown. We have two males and one female from Guatemala (east coast). 102 PECKHAM. [Vol. 2, Balmaceda punctata is smaller, slenderer and more com- pact, with short, heavy first legs, and has on the abdomen two rows of yellow spots. BALMACEDA PUNCTATA SP. NOV. Plate VIII, Figs. 8—8c. $. Length, 5. Length of cephalothorax, 2.1; width of cephalothorax, 1.5. @. Length 6. Length of cephalothorax 2.2; width of cephalothorax 1.6. Legs, $, 41 32; first pair much the stoutest; 9, 4132. This is a low, flat, slender spider. The quadrangle of the eyes is one-third wider than long, slightly wider behind than in front, and occupies about two-fifths of the cephalothorax. The eyes of the first row are close together, in a straight line, the middle being nearly twice as large as the lateral. The second row is half-way between the first and third rows. The third row is nearly as wide as the cephalothorax at that place. The sides of the cephalothorax are nearly parallel. The cepha- lic and thoracic parts are on the same plane and are very flat above. The first legs are short, with the femur and tibia heavily thickened, giving a short, stubby look. The cephalothorax and abdomen are black, nearly covered with white hairs. In the posterior half of the abdomen are first, a pair of round spots, next a pair of spots somewhat lengthened out, and finally, in front of the spinnerets, a pair of curved bands, all in bright yellow. The male has the legs and palpi brown, with white hairs, the first pair darker than the others. The female has the legs and palpi light reddish-yel- low, the palpi being covered with white hairs. The clypeus is covered with white hairs. The falces are dark brown. Central America (exact locality unknown). OMURA GEN. Nov. Spiders of medium size, with the cephalothorax flattened and the abdomen rounded. No. 2.] SPIDERS OF THE MARPTUSA GROUP. 105 The cephalothorax is moderately high, and is flat above, the cephalic and the anterior thoracic parts being on the same plane. The widest point is considerably behind the dorsal eyes, and it is sensibly contracted both in front and behind. The sides are nearly vertical in the cephalic part, but round out quite widely in the thoracic. ‘The thorax is flat for about one- half its length, and then rounds off and falls rather steeply to the posterior margin. The quadrangle of the eyes is one-third wider than long, is almost equally wide in front and behind, and occupies two-fifths of the length of the cephalothorax. The first row is straight, or curved downward, with the eyes all close together, the middle being fully twice as large as the lateral. The second row is nearer the first than the third row. The third row is nearly as wide as the cephalothorax at that place. The abdomen is rather long and is pointed behind ; it is rounded, not flattened. The labium is about as long as wide. The species upon which we found this genus seems to lie between Sadala and Balmaceda. It is too large and heavy for the former genus and is not of the right shape for the latter. in Balmaceda the first row of eyes is straight and the cephalo- thorax is flat through nearly all its length ; in Omura the first row is curyed downward and the posterior slope of the cephalo- thorax begins at about the middle of the thorax. In Sadala the middle eyes of the first row are relatively larger than in Omura. The shape of the abdomen is like that of Mendoza, but the body and legs are much smaller and more delicate. Mendoza, moreover, is found in Egypt, and Omura in Brazil. OMURA CRUENTA SP. NOY. Plate X., Figs. 2—2c. ?. Length, 7.6. Length of cephalothorax, 2.6; width of cephalothorax, 2. Legs, 4812, the third and first being nearly equal. The first and second pairs are stoutest. This is a medium-sized, handsome red spider. The falces are moderately long and stout and are vertical. The first and 104 PECKHAM. [Vol. 2, second pairs of legs are plainly shorter and stouter than the third and fourth. The first row of eyes is a little curved. The cephalothorax is covered with bright red hair, which stands out around the eyes of the first row. On the central thoracic part, just where it begins to slope backward, is a dark brown chevron, which points forward. The abdomen has a mottled appearance, from being thickly covered with a mixture of red, white and a few black hairs. The upper four spinnerets are short and close together. The lower four are longer, and the external one on each side is covered with white and red hairs. Underneath, the venter is mottled with black and white. The legs, palpi, sternum and mouth parts are light reddish- yellow ; the falces are darker. We have one female, in the Smith collection, from Brazil (Santarem). OMURA PERITA SP. NOV. Plate X., Figs. 3—3a. 9. Length, 8.4. Length of cephalothorax, 3.2; width of cephalothorax, 2.2. Legs, 4812, the first and second pairs being the stoutest. This species is much like cruenta. The first row of eyes, however, is straight. The middle eyes are prominent and large, the lateral being placed further back. The falces are vertical, and moderately long and stout. The spider has been dried and shriveled so that no very exact description is possible. The general color is medium brown, more or less blotched and spotted with black. The in- tegument, in the eye region, is of a yellowish color, and there are some yellow hairs remaining around the eyes of the second and third rows. The hairs on the clypeus are white. The abdomen is dull brown, with speckles of black, and a broken white band down the middle, which is made neither of scales nor of hairs, but apparently of a thickened part of the integu- ment. The drawing gives the spider as it appears under al- cohol. The palpi are pale yellowish, with white hairs. The No. 2.] SPIDERS OF THE MARPTUSA GROUP. 105 legs are brown, the first pair being a little the darkest. The falces are dark brown. The labium is very dark, the maxille, sternum and coxee much lighter. A single female from Pumamarco. MENDOZA GEN. nov. Plate X., Figs. 4—4b. Spiders above medium size, but not very large. The cephalothorax is only moderately high, and is flat on the upper surface throughout the greater part of its length, ex- cepting a transverse depression behind the dorsal eyes. The posterior slope is gradual. ‘The sides are slightly rounded out from above downward. The widest partis atthe posterior end, from which point there is agradual and very slight contraction to the anterior end. The quadrangle of the eyes is one-third wider than long, is slightly wider behind than in front, and occupies about two- fifths of the cephalothorax. The first row of eyes is straight. The middle eyes are sub-touching. The lateral are slightly separated from them ; the middle are less than twice as large as the lateral eyes. The second row is half-way between the first and third rows. ‘The third row is narrower than the cephalo- thorax at that place. The lip is longer than wide. The type of this genus is Attus memorabilis Cambridge (Spiders of Egypt, Proc. Zool. Society of London, 1876, p. 618, plate LX., fig. 110). The measurements of this species are as follows : g. Length, 11. Length of cephalothorax, 4.4; width of cephalothorax, 3.7. Relative length of legs, 4312, the first pair being the stoutest. We have one female from Egypt. Mendoza is nearest Marptusa, but is not so massive. The quadrangle of the eyes is wider behind (in Marptusa it is wider in front). The cephalic part is a little longer and it is not so wide across the middle of the cephalothorax. The sides are more nearly parallel than in either Marptusa or Menemerus, 106 -PECKHAM. [Vol. 2, and it also differs from Menemerus in general shape, being flatter and longer, both in cephalothorax and abdomen. From above it looks like Menemerus, but from the side it looks more like Marptusa. It is not so heavy as Breda. MENEMERUS SIMON. Plate X., Fig. 5—5d. Spiders of medium size. The cephalothorax is moderately high, is shghtly convex, and is two-thirds as wide as long. It is widest behind the dorsal eyes, growing sensibly narrower from this point to the front. The quadrangle of the eyes is one-third wider than long ; it occupies two-fifths of the length of the cephalothorax and is equally wide in front and behind, or wider behind. The thoracic part begins to slant just behind the dorsal eyes. The first row of eyes is straight. The middle eyes are sub-touching, the lateral a little separated. The middle are less than twice as large as the lateral eyes. The second row is usually a little nearer the third than the first row. The third row is a little narrower than the cephalothorax at that place, the eyes being about as far from each other as from the lateral borders. Menemerus is most closely related to Marptusa, but the spiders are usually smaller, the upper surface of the cephalo- thorax is not so flat, the cephalic part being plainly inclined forward; there isa more decided dilatation behind the dorsal eyes; the cephalic part is relatively longer (two-fifths instead of about one-third of the cephalothorax), and the dorsal eyes are placed on the sides of the head, not on the upper surface. The relations of Menemerus to Icius and Epiblemum are given under those genera. It is not so low and flat as Balma- ceda. The cephalothorax is not so flat as in Breda, and does not widen out so much, the second row of eyes being about as wide as the cephalothorax at that place, while in Breda it is much narrower. No. 2.] SPIDERS OF THE MARPTUSA GROUP. 107 The type of this genus is Menemerus semilimbatus Hahn (Menemerus semilimbatus Simon, Arachnides de France, Vol. IIL., p. 32). We have also Menemerus falsificus Simon (ibid., p. 34), Menemerus interemptor Cambridge (Spiders of Egypt, Proce. Zool. Society of London, 1876, p. 623), and Menemerus foliatus L. Koch (Arachniden Australiens, p. 1123). EPIBLEMUM HENTZ. Plate X., Figs. 6—6b. Spiders of moderate size. The cephalothorax is moderately high, slightly convex, and a very little dilated behind the dorsal eyes. The sides are almost vertical in front and rounded behind. The cephalic part is slightly inclined; the thoracic part falls gradually for two-thirds of its length and then steeply. The quadrangle of the eyes is about one-third wider than long; is equally wide in front and behind, and occupies a little more than one-third of the cephalothorax. The first row of eyes is straight ; the eyes are sub-touching, the middle being nearly twice as large as the lateral. The second row is half-way between the first and the third. The third is not quite so wide as the cephalothorax at that place. Epiblemum is most closely related to Icius, but the cephalic part is relatively shorter, occupying scarcely more than one-third of the cephalothorax. It differs from Menemerus in haying the first row of eyes straight, in having the eyes all smaller and the lateral eyes relatively smaller than the middle (only about half as large). The cephalothorax, also, is not so high and does not slope so abruptly from the dorsal eyes nor widen so much in the thoracic part. The type of this genus is Epiblemum scenicum Cl. (Aran- eus scenicus), which we have described in N. A. Attidee, p. 76. We have also received from M. Simon the following species, which are well described in the third volume of his Arach- nides de France, under the generic name Calliethera: ze- branea C. K., infima E. S. and mutabilis Le. 108 PECKHAM. fVol. 2, ICIUS SIMON. Plate X., Figs. 7—7b. Spiders small or of moderate size. The cephalothorax is moderately high. Both cephalic and thoracic parts are slightly inclined, so that in profile it looks convex ; the thoracic part falls only a little in its first half, and then slants abruptly. ‘The sides are nearly parallel, there being only a slight enlargement behind the dorsal eyes. The first row of eyes is straight or slightly curved. The middle are nearly twice as large as the lateral eyes. The second row is half-way between the first and third or a little nearer the first. The third row is as wide, or nearly as wide, as the cephalothorax at that place, the eyes being further from each other than from the lateral borders. The quadrangle of the eyes is from one-third wider than long to nearly twice as wide as long; it is a little wider behind than in front, and oc- cupies about two-fifths (nearly one-half) of the cephalothorax. Icius closely resembles Epiblemum, in general shape, but the cephalic part is relatively longer, occupying nearly one-half of the length of the cephalothorax, while in Epiblemum it oc- cupies about one-third. It is also near Menemerus. In this latter genus, however, the cephalothorax is higher, and widens more perceptibly be- hind the dorsal eyes; the thoracic part slopes more steeply from the dorsal eyes; and the lateral eyes of the first row are relatively larger, being about two-thirds as large as the middle eyes. Of this genus we have Icius (Icelus) notabilis C. Koch (Arachnides de France, E. Simon, Vol. III., p. 57); Icius linea- tus (Meevia lineata C. K.), described in N. A. Attidee, p. 45; Icius elegans (Attus elegans @ and Attus superciliosus ¢ Hentz), which we have described in North American Attidee, p. 37, under Dendryphantes; Icius striatus Wlk., described in Simon’s Arachnides de France, Vol. III., p. 59; Icius hartii Emerton, New England Attide, Trans. Conn. Acad., Vol. VIIL., Oct., 1891, and a new species, wickhamu, from the Ba- hamas. No. 2.] SPIDERS OF THE MARPTUSA GROUP. 109 ICIUS WICKHAMII SP. NOY. Plate X., Figs. 8—8d. > $. Length, 3. Length of cephalothorax, 1.7; width of cephalothorax, 1.3. Legs, 1423; first pair stoutest. This is a small species, of which we have only two males. The first row of eyes is slightly curved. The second row is nearer the first than the third. The third row is just about as wide as the cephalothorax at that place. The quadrangle of the eyes is one-third wider than long. The falces are short and wide—almost square. The mouth parts are short, the maxille rounded, and the labium truncated. This seems to haye been a handsome little spider, but has been badly rubbed. The integument is black, with patches of white hairs. There are rings of bright red hairs around the anterior eyes, and the abdomen has a curved band of white hairs around the anterior end. The first legs, the palpi and the falces are bronze-brown. The other legs are pale. All the legs have black longitudinal bands running from the proximal end of the patella to the terminal end of the metatarsus. The mouth parts and anterior coxee are dark brown, the sternum and venter black, and the second, third and fourth pairs of coxe colorless. This spider, found at Eleuthera in the Bahamas, was sent to us by Mr. H. F. Wickham, for whom we have named it. PSEUDICIUS SIMON. Plate XI., Figs. 1—10. Rather long and narrow spiders of medium size. The cephalothorax is low and rather long, sometimes nearly twice as long as wide. It isa little the widest in the middle of the thorax, the anterior end being plainly narrowest. The sides are nearly vertical in the cephalic part, but are rounded out in the thoracic. The upper surface is almost flat, but in most cases there is a very gradual slope behind the dor- sal eyes. The posterior slope is gradual. 110 PECKHAM. [Vol. 2, The quadrangle of the eyes is one-third wider than long, is equally wide in front and behind or wider behind (usually plainly wider behind) and occupies two-fifths of the cephalo- thorax, or a little less. The first row of eyes is straight. The middle eyes are close together, the lateral sometimes a little separated. The middle are twice, or nearly twice, as large as the lateral. The second row is half-way between the first and third rows, or is a little nearer the first. The third row is as wide, or very nearly as wide, as the cephalothorax at that place. In Pseudicius the cephalothorax is longer and narrower than in Icius, and the cephalic part is not inclined. It differs from Menemerus in being lower, flatter, narrower and not so much dilated, and in having the cephalic part level and the abdomen rather long and narrow. The type of Pseudicius is (Dendryphantes) encarpatus Wlk., described in Simon’s Arachnides de France, Vol. IIL., p. 42. We include in this genus Attus binus Hentz, described under the genus Menemerus by Mr. Emerton in his New Eng- land Attidee, Trans. Conn. Acad., Vol. VILL, Oct., 1891; Marptusa radiata Grube, described by M. Simon in his Arachnides de France, Vol. III, p. 28; two new species, oblongus, from Brazil, and cognatus, from Japan, and Icius piraticus P., N. A. Attidee, p. 49. PSEUDICIUS OBLONGUS SP. NOY. Plate XI., Figs. 2—2a. g. Length, 11. Length of cephalothorax, 4; width of cephalothorax, 2.3. Legs, 1428; first pair stouter and darker colored than the others. The cephalothorax is low and long; it is narrowest in front and widens gradually from that point to the anterior thoracic part, where it is widest. The sides are nowhere verti- cal. The upper surface is perfectly flat through the cephalic and two-thirds of the thoracic part, except for a slight depres- sion that separates the two, and then falls in a short, gradual slope to the margin. The upper surface of the thorax is nar- No. 2.] SPIDERS OF THE MARPTUSA GROUP. 111 rower than that of the caput, the thoracic plate being obtusely rounded behind. The quadrangle of the eyes is one-third wider than long, is equally wide in front and behind and occupies two- fifths of the length of the cephalothorax. The anterior eyes are large and form a straight row ; they are a little separated from each other, and the middle are twice as large as the lateral. The second row is a little nearer the first than the third. The third réw is narrower than the cephalothorax. The abdomen is long and rather slender, narrowing slightly behind. The falces are moderately long; they are stout, and obliquely directed forward, and have several teeth on the imner edge of each. The maxille are long and heavy. The labium is as wide as long, and is half as long as the max- ille. The sternum is oval. The upper surface of the cephalothorax seems to have been covered with white hairs. Orange-colored hairs cover the pos- terior slope and the upper sides, and grow thick and long around the eyes of the first row. ‘The lower sides have a wide band of white hairs, and there isa black line around the lower edge. The integument of the upper surface is black, with iri- descent reflections. Just behind the post-ocular depression is a large spot of light brown, which becomes conspicuous when the hairs are rubbed off. The integument of the abdomen is fawn color, with two parallel, longitudinal black stripes. The fawn-colored part is covered with white, and the black part with orange hairs. There are a good many long, white hairs which project for- ward around the anterior end of the abdomen. The falces are dark reddish-brown, overhung with long, white hairs from the clypeus and haying themselves a thin covering of white hairs and short fringes of brownish-yellow hairs on their inner edges. The first leg is dark reddish-brown, with one spine on the femur, one on the patella and a double row of heavy spines on the under surface of the tibia. The other legs are yellowish- brown, much lighter in tint than the first, none of them being very hairy. The mouth parts are almost black and are cov- ered with brown hairs. The venteris brown, with white hairs; 112 PECKHAM. [Vol. 2, in the central posterior part of the yenter isa longitudinal black band ; in the anterior part this band narrows and is bordered with dull gold color. Of this species we have a single example, a female, from Santarem, Brazil. PSEUDICIUS COGNATUS SP. NOV. Plate XI, Figs. 3—3a. g. Length, 8.4. Length of cephalothorax, 3.2; width of cephalothorax, 2.2. Legs, 1432; the second and third not far from equal. First pair plainly stoutest, and of a darker color than the others. The whole spider is long and narrow. In the cephalic part the cephalothorax is moderately high and the sides slant inward toward the lower edge. There is a transverse depression behind the dorsal eyes, behind which the thoracic part re- mains on the same plane as the cephalic for about half its length, and then slopes rather gradually to the posterior border. The quadrangle of the eyes is one-third wider than long, is wider behind than in front, and occupies two-fifths of the ce- phalothorax. The first row of eyes is straight, the middle eyes of this row are close together and are fully twice as large as the lateral eyes, which are a little separated from them and are placed further back. The second row is half-way between the first and third. The third row is as wide as the cephalothorax at that place. The whole cephalothorax is long and narrow, the nar- rowest point being at the anterior end, from which place it widens gradually to near the posterior end. The abdomen is long and narrow, and is slightly wider in front than behind. The first leg has the femur, patella and tibia enlarged. There are two rows of spines on the under side of the tibia and metatarsus, those of the outer row being much smaller and weaker than those of the inner. The falces are vertical, and are long and strong. No. 2.] SPIDERS OF THE MARPTUSA GROUP. 118 The cephalothorax is black, with a thin covering of long, yellowish-white hairs. The abdomen is gray on the sides and down the middle, with two broken, dark-colored longitudinal bands. The first legs are dark brown with a reddish tint, and are well covered with white hairs. The other legs and the palpi are light yellowish-brown, the palpi and the clypeus being covered with long, white hairs. The falces are reddish-brown. We have one female from Japan, the exact locality being unknown. FUENTES Gen. nov. Spiders below medium size, with the cephalothorax rather narrow, with nearly parallel sides. The cephalothorax is rather low and is flat (with the ex- ception of the post-ocular depression) throughout the cephalic and nearly all of the thoracic part, sloping off rather steeply a little in front of the posterior border. The sides are nearly parallel, there being an almost imperceptible widening behind the dorsal eyes. The sides are vertical, or nearly vertical, in the cephalic part, but are slightly wider below in the _ thoracic. The quadrangle of the eyes is from one-fourth to one-third wider than long, is equally wide in front and behind and occupies two-fifths of the cephalothorax. The first row of eyes is straight, the middle being nearly twice as large as the lateral. The position of the eyes of the second row varies. They are sometimes nearer the lateral, and sometimes nearer the dorsal eyes. The dorsal eyes are rather larger than usual, and form a row nearly, if not quite, as wide as the cephalo- thorax at that place. This genus, formed for a new species, pertinax, also in- cludes (Icius) lineatus C. K., described in our N. A. Spiders of the Family Attide, p. 45. FUENTES PERTINAX SP. NOY. Plate XI., Figs. 4—4f. $. Length, 5.5. Length of cephalothorax, 2.2; width of cephalothorax, 1.5. 114 PECKHAM. [Vol. 2, 9g. Length, 7.5. Length of cephalothorax, 3; width of cephalothorax, 2. Legs, ¢, 1423; ¢, 4123. The first pair is enlarged in both sexes ; the other legs are slender. A rather small species, with the abdomen long and narrow, with longitudinal bands. The quadrangle of the eyes is one-fourth wider than long and is equally wide in front and behind. The second row of eyes is a little nearer the first than the third row. The falces are small, short and vertical. The maxillee are more than twice as long as the labium. The sternum is oyal. The colors are nearly alike in the two sexes. The cephalo- thorax is very dark brown—black in the cephalic region, with patches of white hairs behind the dorsal eyes and a white ring around the lower border. There are some short, white hairs on the clypeus. The sides of the abdomen are light brown. The central region is dark brown or black, with two narrow, longi- tudinal white stripes running throughout its length, between which, at the posterior end, are some small, light chevrons. The first leg is dark brown excepting the metatarsus and tarsus. These joints, and all the other legs, are light yellowish- brown. In the male the palpi are dark brown, and in the female they are hght. The falces are dark brown. We have two females and one male from Bellize, British Honduras. ITATA GEN. Nov. The spiders of this genus are long and slender and have the cephalothorax rather low. The cephalic part is flat and slightly inclined; the thoracic part slopes quite steeply from the third row of eyes to the posterior margin, and this slant has a flattened surface, giving from behind a wedge-shaped ap- pearance. The sides of the cephalothorax slope outward ; their widest point is at or just behind the dorsal eyes, the dilatation being slight. The quadrangle of the eyes is one-fourth wider than long and is wider in front than behind. It occupies two-fifths of the No. 2.] SPIDERS OF THE MARPTUSA GROUP. 115 cephalothorax. The first row of eyes is curved. The middle are fully twice as large as the lateral eyes, and are sub-touch- ing, the lateral being a little separated from them, and placed further back. The second row is plainly nearer the first than the third. The dorsal eyes are almost equally distant from each other and from the lateral borders, and form a row which is not so wide as the cephalothorax at that place. The labium is much longer than wide. The abdomen is long, cylindrical and pointed, and, in the only two species that we have, is of a pale yellow color, the cephalothorax being some shades darker. This genus is very close to Hyctia. The abdomen is the same, and the legs of the first pair are much the longest and heaviest, as in that genus. The cephalothorax, however, is of a different shape; thesides are not vertical nor parallel, and the thoracic part slopes from the third row of eyes, instead of being on the same plane as the cephalic. The cephalothorax, more- over, is higher. The quadrangle of the eyes occupies two- fifths, instead of one-third, of the length of the cephalothorax, and the middle eyes of the first row are more prominent and larger than in Hyctia, being fully twice as large as the lateral eyes. We found this genus on a new species from New Grenada.. It includes Dr. Taczanowski’s Marpissa isabellina, Araneides du Perou, Bull. Soc. Imp. de Moscou, Tome LIIL., p. 325. ITATA VADIA SP. NOV. Plate XI., Figs. 5—5f. é. Length, 8. Length of cephalothorax, 2.8; width of cephalothorax, 2. @. Length, 7.4. Length of cephalothorax, 2.5; width of cephalothorax, 1.8. Legs, 1432, in both sexes. Those of the first pair are long- est and stoutest and are darker in color than the others. The falces are moderately stout; in the female they are not quite vertical and only moderately long; in the male they are longer and are plainly inclined forward. 116 PECKHAM. i [Vol. 2, In alcohol the abdomen and the second, third and fourth pairs of legs are pale yellow, almost white, while the cephalo- thorax and first pair of legs are much darker yellow, tinged with red. The central anterior eyes are reddish-yellow, like the color of the cephalothorax. The other six are black and are placed on large, black spots. There is a good deal of snow-white hair on the cephalothorax, growing most thickly in a band above the anterior eyes, in lateral bands and in a central spot behind the dorsal eyes. The mouth parts and falces are brown, darker in the male than in the female; otherwise the under surface is very light yellow—almost white. The first legs are dark red- dish-yellow, with a fringe of dark hairs, intermingled with spines, along the inner edge. The other legs are pale yellow. The palpi are pale yellow, only the distal joint being darkened. The clypeus has a distinct fringe of white hairs. The abdo- men has, on the dorsum, four pairs of white spots, those on the anterior part being separated, while those on the posterior part approach each other and almost coalesce. In one speci- men (the one shown in the drawing) there seems to have been a central white band, although a good deal of it is rubbed away. In another there seem to have been two narrow white bands, separated by a yellow space,down the middle. In all cases the white part consists of flat scales, and the bands or spots are broken by cracks or veinings which show the yellow color of the integument. In color and appearance this species is much like Itata isa- bellina of Taczanowski, which is found in Peru. The female of the latter species, however, has the first leg plainly longer than the second, while in vadia they are nearly equal. We haye two males and three females from New Grenada. HYCTIA SIMON. Plate XI., Figs. 8—8d, and Figs. 7—7b. Long, slender, delicate spiders. The cephalothorax is long, low, flat and narrow, and is nearly twice as long as wide. The cephalic and thoracic parts No. 2.] SPIDERS OF THE MARPTUSA GROUP. 117 are on the same plane. The sides are vertical and almost par- allel, widening a little behind the dorsal eyes. The quadrangle of the eyes is one-fourth wider than long, is equally wide in front and behind, and occupies from one- third to two-fifths of the cephalothorax. The first row is straight or a little curved. The eyes are sub-touching or slight- ly separated. The middle eyes are almost twice as large as the lateral. The second row is about half-way between the first and the third. The dorsal eyes are smaller than the lateral eyes of the first row, and form a row which is as wide as the cephalo- thorax at that place. The labium is longer than wide. The narrow, parallel, vertical shape of the cephalothorax and the large middle eyes distinguish Hyctia from Marptusa. The flat dorsum separates it easily from Icius and Menemerus; and the greater length in proportion to its width from Holoplatys, Rudra and Balmaceda. Hyctia is nearest Goleta and Itata. Goleta is even lower, and has the cephalothorax twice as long as wide, the middle eyes of the first row more than twice as large as the lateral, and the first row of eyes curved downward ; while in Itata the sides are neither vertical nor parallel,and the thoracic part slopes from the dorsal eyes. The type of this genus is Hyctia (Salticus) nivoyi Lucas, described in Simon’s Arachnides de France, Vol. IIL, p. 20. We have also Hyctia canestrini Cn. et Py., ibid., p. 21, and Hyctia pikei P., N. A. Attidee, p. 79. SPADERA GEN. Nov. The cephalothorax is low, and is long in proportion to the width. The sides are vertical in front, but slant out a little in the thoracic part; they are not far from being parallel, but there is a slight dilatation just behind the dorsal eyes, be- yond which the cephalothorax narrows again. The cephalic plate is slightly inclined forward. The thoracic part does not slant for two-thirds of its length and then drops abruptly. The quadrangle of the eyes is about one-fifth wider than long, is 118 PECKHAM. [Vol. 2, almost equally wide in front and behind, and occupies two- fifths of the length of the cephalothorax. The anterior eyes are small, in a straight row; they are close together. The middle are less than twice as large as the lateral eyes. The second row is half-way between the first and the third. The third row is nearly as wide as the cephalothorax in that place. The lip is longer than wide. This genus is nearest Hyctia, but the body is not so long and slender as in that genus, the first legs are not so long and stout, the middle eyes of the first row are not nearly twice as large as the lateral, and the cephalothorax is not so flat nor are its sides quite parallel. Hyctia is more like Itata than like Spadera. The only similar genus in Madagascar is Padilla, which is marked off from Spadera by the position of the eyes and the shape of the cephalothorax. SPADERA UNICA SP. NOV. late pe xaile iio ss elie: 6. Length, 4.8. Length of cephalothorax, 2; width of cephalothorax, 1.2. Legs, 1432; first pair plainly stoutest. The falces are short but stout and project obliquely forward. The fangisrather long. The maxillee are rounded and are more than twice as long as the labium. ‘The sternum is twice as long as wide. The femur, patella and tibia of the first leg are thick- ened, especially the femur. The color of the cephalothorax is dark brown; the eye region is blackish. The upper surface is thinly covered with mixed red and white hairs. A wide, white band encircles the lower sides and below this is a black line. The clypeus and palpus are covered with white hairs. The abdomen is light brown, with a dark region down the middle, which consists of two triangular figures on the anterior and middle part and some rounded spots behind. There is a transverse, curved, white band at the anterior end of the abdomen, and another across the middle; and the brown spots at the posterior end are No. 2.) SPIDERS OF THE MARPTUSA GROUP. 119 surrounded by white. The legs are brown, the first pair being the darkest. The falces are dark brown. The under surface is dark brown, thinly covered with white hairs. We have one male, from Madagascar. HELVETIA cen. nov. Rather small spiders, with the cephalothorax narrow and long and the abdomen rounded. The cephalothorax is narrow, low and flat. The sides are vertical, widening from the anterior to the posterior end, with the posterior angles rounded. The cephalic and thoracic parts are on the same plane,and there is no fall behind until just above the posterior margin. The quadrangle of the eyes is equally wide in front and behind, is one-fifth wider than long and occupies two-fifths of the cephalothorax. The anterior row is curved downward, the eyes being sub-touching and rather small, the middle about twice as large as the lateral. The second row is about half-way between the first and third. The third row is about as wide as the cephalothorax at that place. The labium is longer than wide. The cephalothorax in this genus is not so wide as in Spa- dera. It differs from Hyctia in having the sides of the cephalo- thorax wider behind instead of parallel, and in the first row of eyes being curved downward ; it lacks, besides, the exaggerated length and slenderness of that genus. HELVETIA SANTAREMA SP. NOV. Plate XII, Figs, 2—2d. 9g. Length, 5.2. Length of cephalothorax, 2; width of cephalothorax, 1. Legs, 4132; are short and almost equally stout. The falces are rather long and stout for the size of the spider and are a little inclined forward. The ground color is dark olive-brown. > — Ty vSRPUT NR Mt a Po it J,H.Emercon, from nature. E. Crisand, lith., New Haven, Ct, ‘ { ms ee Sees at Be ¢ iy ey f: ear 7 ad ~~ i = ; a PLATE XI. Fig. 1, Pseudicius encarpatus dorsal view of female ; 1a, face and falces; 10, side view of cephalothorax. Fig. 2, Pseudicius oblongus, dorsal view of female, x 6; 2a, epigynum. Fig. 3, Pseudicius cognatus, dorsal view of femaie, x 6; 3a, epigynum. Fig. 4, Fuentes pertinax, dorsal view of female, x 8; 4a, face and falces; 4b, side view of cephalothorax; 4c, epigynum; 4d, 4e and 4f, male palpus. Fig. 5, Itata vadia, dorsal view of female; 5a, face and falces; 5b, side view of cephalothorax ; 5c, epigynum ; 5d, 5e and 5f, male palpus. Fig. 6, Admestina wheelerii, dorsal view of male, x 8; 6a, side view of cephalothorax ; 60, face and falces. Fig. 7, Hyctia pikei, dorsal view of female, x 8; 7a, face and falces; 7b, side view of cephalothorax. Fig. 8, Hyctia nivoyi, dorsal view of female ; 8a, face and falces ; 80, side view of cephalothorax. PLATE XI. Hh at 4 ja Ih 1 M4 W ll Wo E Crisané, lita, New Haven, Cr a) 2 Rea a eee = PLATE XII. Fig. 1, Spadera unica, dorsal view of male; la, side view of cephalothorax; 1b, face and falces; lc, 1d and le, male palpus. Fig. 2, Helvetia santarema, dorsal view of female; 2a, side view of cephalothorax ; 2b, face and falces; 2c, epigynum; 2d, epigynum of a second individual. Fig 3, Rudra geniculata, dorsal view of female, x 6; 3a, side view of cephalothorax ; 30, face and falces. Fig. 4, Rudra polita, dorsal view of female, x 8; 4a, epigy- num. Fig. 5, Rudra tenera, dorsal view of female ; 5a, epigynum. Fig. 6, Holoplatys planissima, dorsal view of female, x 6. 6a, side of cephalothorax ; 65, face and falces. Fig. 7, Goleta workmanii, dorsal view of female, x 8; 7a, side view of cephalothorax ; 7), face and falces. Fig. 8, Anoka grenada, dorsal view of male, x 8 ; 8a, 8b and 8c, male palpus. Fig. 9, Anoka moneagua, dorsal view of male, x 8; 9a, 96 and 9c, male palpus; 9d, dorsal view of female, x 8; 9e, epigy- num. iy il i } CNN | \ KY " —w~ Gut) Wily y J... Emerton, from nature. E, Crisand, lith ,New Haven, Ct, PLATE XIII. Fig. 1, Padilla armata, dorsal view of female, x 8; la, face and falces of female ; 1, side view of cephalothorax of female ; le, epigynum ; 1d, side of cephalothorax of male, showing horns; le, falces of male, from below; 1f, 1g and 1h, male palpus. Fig. 2, Anoka parallela, dorsal view of male, x 6 ; 2a, male palpus; 2b and 2c, palpus of a second male. Fig. 8, Anoka vernalis, dorsal view of female, x 6; 3a, side of cephalothorax ; 30, face. Fig. 4, Sadala distincta, dorsal view of male; 4a, face and falces ; 4b, side view of cephalothorax. Fig. 5, Sadala magna, dorsal view of female ; 5a, epigynum ; 50, dorsal view of male ; 5c, 5d and 5e, male palpus. ee ee ee ee SS ll SS Ae yp | a al 7 > SF iF 7 PLATE XIT _ J. H.Emerton, from nature. E. Crisand, lith: New Haven Ctr PLATE XIV. Fig. 1, Sadala gemmea, dorsal view of female, x 8; 1a, epigynum ; 16, dorsal view of male, x 8; 1c, 1d and le, male palpus. Fig. 2, Sadala horatia, dorsal view of female; 2a, epigy- num; 2b, dorsal view of male; 2c, 2d and 2e, male palpus. Fig. 3, Sadala deserta, dorsal view of female, x 8; 3a, epigynum ; 30, dorsal view of male, x8; 3c, 3d and 3e, male palpus. Fig. 4, Ashtabula zonura, dorsal view of male; 4a, side view of cephalothorax . 4b, face and falces; 4c, 4d and 4e, male palpus. PLATE XIV. ‘fn FGA it 2 Jj, H.Emercton, from nature PAGE. ENGONUPSE pac eeertescerencerecerencsientseeis a 99 suavis L. K.... . 99 JID NITSRITMTNT No joonqdaqs.eb00900000000071050000000 120 wine Cleninipkyeaecrceesecnecde snes 120 LNISTOMSTN cpp accencnccmoceucgdonansodecodcdadacn 125 126 erenada P.... TONGAN TRIG IAUZ-p450e¢0cq5000005—00000 126 | MONICA CWA eareceneaeseaceccscseore 127 parallela P.. 129 AVMEWAIS TE] ocasoteecosoe0ncodaecqo09 126 AWOLIMET NS 1Podschoed sodcaseessodesGan 126 | PAIS HIMUAIB UAc ee taieevnsteweasctetiocesedsecsicseres 38 PAONMIDUEED) 12 nenoodoossodencqasscHOoOoO 140 PAU G Haun one sane ten re taceace ceehsenetren nats 87 [OHMS IBIS, cococcs coosedcasacocds 110 elegans Hentz memorabilis Camb ............. 105 TON ae UES) J BEN YAS scnoced boo ooeED 126 morigerus Hentz..... 126 muscivorus Vinson............. 87 nigro-fuscus Vinson............ 87 eur eeonus Wik.. wage nee MeL recalctae hostanesaals 121 TBYATERITINGIDIDY Ns snadoocnodouuogobondocbooncnnaren 100 | lomacteataplis Keeeeseseane ates 100 TOO KCKESTIE: IMO ZarancscsocsscqcceHeo 100 JOH 1s cossdoheopsenoscocsbnaconcoanc 101 JOULE) Je a6one nosmanoosebHacoae 102 IB SAN TAN ea eyatlsic asic civce seis neneseeescinscesanee seer 99 POTIC CPS hi. Ssccencsenccesecsessenne 99 ornata a « 99 IBIRE Di Aviece cs ncede cess seecvtcesscoviscesevensasee 92 Tool ating), (Cis IES Spggcocomcacasesssoce 3 Wo omunslkiMaCzrsesesercuceseeees 94 | CALLIETHERA ... infima E. : TAU) OM LKE) IL{O: copoanecnccnedson0000e" scenicum Clk... zebranea C. K PAGE. IDENDRYPHIANTES ...csccsscsesseces © soncee 108 elegans Hentz. ..108 encarpatus WIk.................- 110 WDB ZACracascweegesnecdecosaes eh owetee Sesame aes 97 sumptuosa Perty.. E}PTBUEMUMiesnesceseseeccsereceessersc esses THaNaAHE, IB, Shooecocepsdoosnooosecsacs 107 TOOMMTeH OWS) ILC escocasdsacsmanq.coee 107 palmarum Hentz................ 126 Scemilcumi Clikceesse--sseeesseseee- 0 zebranea C. K. 07 THEPEN GIACotecp ica hae ae reece Aaa ste nace re 94 ban bani capers rere eereenceaes 96 Chiaip Oday assancesteree sy tececees: 95 OTM atal Bea seiscccrdsscccesssseeceess 95 Ta Goin 7 ceapacecadoncectaseaccecnonoctaScaee 119 | SMKETREONE),. 12 cosoocenoabsdoouon 119 |) TEIGRUORESE AVRSTS sooacoecboaconosascodosoaceeoass 123 IexaeoreouTats|. IU), Vocnooosoooss5008 124 Tol aS Simin ayy a Cee eeeeeeeeee 124 METY, OTRAS. conestsoeeve oeseaeeecs .116 canestrini Cn. and Pv......... 117 LAUD YONAb IU) SSoocancssneepasacQ00N obo 117 pikei P.... # TICS Siscepeonebonoeneaanoesniccetccceoeea see So Seo 108 elegans ents Giadudcasdecanecesst: 108 (HOAIMITNGWIS) | 1B cocsnosonocps0nooosoubos 150 ay; tily EMVertonesssresesesses--