SKINNER AND WILLIAMS 289 



up into California; the third, Arizona, Texas and to the South. 

 He places occidentalis Skinner as a variety. 



Tessellata was described by Scudder from Missouri, and has 

 ])riority over Henperia communis Grote (one male, one 

 female; C'entral Alabama), the types of which are in the collection 

 of the Academy of Natural Sciences of Philadelphia, and are so 

 labelled in the handwriting^ of A. R. Clrote. Coinniunis is a 

 synonym of tessellata. 



The uncus is split at its apex; the scai)hium is p(H!uliar iji that 

 from its middle there ])r()jects inwardly a T-shaped process; 

 the valve is roundcnl at its extremity and carries a process 

 turned inwardly and upwardly ending usually with a double 

 tooth, beyond which there is a long cylindrical arm extending 

 inwardly almost the length of the valve, and with its end strongly 

 denticulate; the aedoeagus is simple. 



a. var. occidentalis Skinner (Fig. 8.) 

 Biol. Cent.-Amer., Rhop., pi. 90, fig. 30, (1899) (as montivaga) . 



This was originally described as a species," as '^ smaller and 

 generally whiter — than tessellata — ^found in the Northwest ter- 

 ritory and in the Southwest generally." The same year oc- 

 cidentalis, tessellata and syriclitus were figured by the author and 

 comparisons made.^^ 



AVe now select from the type material a male from San An- 

 tonio, Texas, as the single t3q:)e. It is like the figured specimens 

 referred to above. Some paratypes, from Ysleta, Texas, April, 

 are still smaller and whiter, and a specimen from the Northwest 

 territory', figured by Keverdin^'' has the ground color still further 

 encroached upon by the white markings. This last, however, 

 cannot be considered t3q)ical of occidentalis, l)ut an aberration of 

 tessellata. The specimen figured by Reverdin as occidentalis^'^ is 

 darker and larger than any in the type lot. 



The name should be restricted to apply only to the smaller, 

 paler form of the species inhabiting the low arid regions along 



1' Ent. News., xvn, p. 96, (190G). 



12 L. c, p. 277, pi. xu. 



"Bull. Soc. Lcp. Geneve, iv, pi. G, fig. 9, (1<)19). 



i^L. c, fig. 11. 



TRAXS. AM. ENT. SOC, XIA III. 



