— 156 - 

 "Katadysas". 



"Characters. Eyes eight, stibequal, in tworows, both cttrved doiunwards; fang 

 o/ ihe cheliceres articiilated dmvnmards; palpi itiserted mar the extremity of 

 the inaxillae. Feet 4. i. 2. 3. Pultnonary orífices only iiuo." 



Observations. This very anomalous spider. found only once, offers a very 

 striking instance of the maiuier in which nature combines characters, so as to 

 sepárate widely animáis which are apparently closely allied. This has al 1 the 

 essential characters oí Mygale. but one Chaving but two pulmonary orífices), and 

 yet it is obvioüsly relatad to Lycosa, near which it should be placed in a natural 

 arrangement. I know nothing of its habits, except that it dwells or hides iinder 

 stones. It probably makes no web. 



'■•Habitat. Alabama. 

 "Katadysas pumilus. 



Pl. 17, fig. 16. 

 ^'Description. Livid, testaceous; cephalothorax with two longitudinal bands 

 near the middle, and two curved fillets near the edge, fuscous; abdomen with a 

 Une bifurcated anteriorly on the middle, and two lines of minute dots on the 

 sides, fuscous: same colour underneath, with minute fuscous dots". 



''Habitat. North Alabama. Under stones." 



Yeux. — Dans les genre lora., les yeux sont les memes de 

 Catadysas. mais quelques-uns des auíeurs que j'ai consultes 

 a propos de celui-lá ne s'expriment pas tons de la meme ma- 

 niere. Je vais citer quelques exemples: 



WESTRING, N. Aratieae Svecicae, i86i,p.324 : "O culi 4 antici, perpendicu- 

 lariter et a postice inspecti, propter frontis formam in seriem recurvatam digestí, 

 sed, ab antice contetnplati, in scrie7n rectam digestí vídentur; series postíca val- 

 de recurvata ; oculi laterales postici ab oculis lateralibus anticís duplo, saltem 



dímidio longíus quam oculi intermedii antici et postici ínter se distant: 



oculi dúo intermedii seriei posticae majores quam oculi serie! antícae " 



SIMÓN. 'E.,Hisf. Naturelle des Araignées, 1864, p. 371. "Yeitx peu inégauxet 

 sur deux lignes: l'antérieure /rííy/íí" droite, tres rapprochée du rebord mandi- 

 bulaire. Les yeux intermédiaires en sont un peu plus petits que les latéraux: 

 ligne supérieure trés-courbée en avant. yeuxégaux et plus gros que les antérieurs. 



SIMÓN E. Les Arachnides de France, T. IV. 1878. p. 314. "Yeux antérieurs en 

 ligne droite ou presque droite, assez resserrés, égaux ou les médians plus gros. . . 



OHLERT, E. Die Araneiden o. editen Spin. d. Prov. Preussen. 1867, p. 129. 

 "Die Augen der vordern Reihe klein in schwach gebogener Linie" .... 



STAVELEY, E. F. British Spiders, 1866, p. 52. (Hecaérge) "Eyes. Four large 

 and four small. The four small form a small crescent next the face, the four large 

 form a larger crescent behind them. The crescents have their convex side to- 

 wards the face". (In H. spinimana) : The two inner eyes of the front row are 

 larger thaii the two outer" . ("Tab. I, f. 4 wrong). 



KOCH, C. \..Die Arachnidcn. Tf. 481, f. 1343. 



HENTZ. N. M. (s. supra). 



