THK MVHiAI'ObA oK N«»UTH AMKKK A. 68 



iHHly. Miilr: MaiulilHilarv sti|M'.s a littU^ pnMliirtMl in the middle; geu- 



ilHliii loiMM'iilrd. Li'ii;;tli of body l.S"", width — 



Hithitfit. — Ituh; (/alit'oniia. 



I hav«' cxaiiiiiicd two adiiltH and two yoiiii^ of thin s|M»cies rollo<'ted 

 by Mr. .laiiu's K. Unrke, alter whom the siM-cies is iiaiiu'd. 



<M'iius 11. — I'AKA.iULrs, Ihimlit. and Saiiss. 



To this jiemis iM'ioiiy: our larj;er s[K*ciesotsoealhMl ./m/m«. From the 

 latter tfeniis it is easily separated l>y the number <(t mandibulary eombs 

 (10), the dwarfed seeoiul pair ot" feet and the form of the tirst seg- 

 ment of the nnih' with its appendaues. 



Under the ^enus ./m/«x, \V«)od says, "In ail species in whieh 1 have 

 had the opportunity of exaujininj^ sexes, the form of the tirst seutum 

 distinjjuishes them with certainty. In the male its antero posterior 

 diameter is larfje, and there are well marked lateral margins ruuniu};- 

 nearly at rij;ht anj^les Ut the others. In the female the anterior pos- 

 terior diameter is much less, but laterally the scutum is so produced 

 that the anterioi' and postei inr mar<»ins may in most cases be said to 

 meet one am)ther at an an};lc. Tiic males are further distin<;uished by 

 a peculiar alteration of the tirst [lair «)f feet, which are transformed into 

 a pair of very larp', thick organs." 



By applying this remark to those species of which he ha<l both sexes, 

 we have most of the species known to be in this genus at present. The 

 following is a key to the subgenera: 



a. First segiiieiit enlargtd in the male. Kirst jKiir of feet of niali- lai<;o, rrasHate, 

 niiiiHTiniH short ttihcrchs mi tlic iimiT sich' I'aha.ii r.is 



aa. I'irst sej^iiieiit alike in hotli si-xcs. I'irsr i)air of feet (>f male whort, thiek, tnlier- 

 cles al>sent l'SEl'l>OJLI.LS 



Sub genus I'urnjulux. 



2. Parajulus castaiieua, sp nov. 



C'olor nearly the same as in P. imprrssus (Say). ^Moderately slender, 

 rough, not pilose. V^ertex tinely wrinkled, a faint median sulcus, se- 

 tigeroiis foveohe present. Anteun;e equaling the width of body. Eyes 

 distinct, triangular, ocelli .H-8. Segments, 42-r)l. Sides of tirst seg- 

 ment striated, others dcej)]y striate beneath, above with numerous short 

 lines, which are branched. Last segment produced into a nuulerate 

 spine, projecting beyond the anal valves, not pilose; anal valves not 

 nuirginate, pilose; anal scale obtusely rotmded, small. Kepugiuitorial 

 pore moderate, touching the transverse suture, which is shari)ly sinuate. 

 Pairs of feet 00, equaling the width of body. Male: Mandibulary 

 stii)es strongly produ«-ed; coxa* of the second pairof feet asin iinpn'ssHs; 

 genitalia abcmt iuilf concealed, composed of three i)lates: anterior plate 

 round, clavate, ])ilose; middle plate curving u]) in front of anterior, 

 and expanding between them into an elongate plate, m hich has three 



