OF WASHINGTON. 37 



One male and several undeveloped females from Alabaster 

 Cave, El Dorado Co., Cal. 



The female resembles the male ; the legs are considerably 

 shorter. On the abdominal apex, just above the spinnerets, 

 is a round white spot. The four stigmata are distinctly visible 

 in one female, which is a little darker colored than the others. 



The three last-named genera belong, no doubt, to well- 

 known families ; Neophanes and Prodalia will find their place 

 in the Dictynida. The presence of a calamistrum and cribel- 

 lum, the elevated, rounded head and the form of the maxillae 

 and labium place these genera in close relationship to the 

 genus Dictyna. 



The genus Usqfila was placed by Keyserling in the Dys- 

 deridtz on account of the four ventral stigmata and the six 

 eyes. 



EXPLANATION OF PIATE I. 



Fig. i Homalonychus selenopoides Marx : #, female, enlarged 2 times ; 

 , eyes seen from above ; c, maxillae, labium and sternum ; d, 

 epigynum ; e, tarsus ; f, auxiliary claw. 



Fig. 2 Habronestes americamts Marx : a, female, enlarged 2 times ; b, 

 face ; c, maxillae, labium and sternum ; d, epigynum. 



Fig. 3 Lutica maculata Marx : a, female, enlarged 3^ times ; b, face ; 

 c, maxillae, labium and sternum ; d, spinnerets. 



Fig. 4 Neophanes pallidus Marx : a, female, enlarged 12 times ; b, face ; 

 c, maxillae, labium and sternum ; d, epigynum ; e, male palpus, 

 from the side ; f, the same, from above. 



Fig. 5 Prodalia foxii Marx : #, female, enlarged 12 times ; b, face ; c, 

 maxillae, labium and sternum ; d, epigynum. 



Fig. 6 Usofila gracilis Keyserling : a, male, enlarged 15 times ; b, max 

 illae, labium and sternum ; c, male palpus ; d, female, enlarged 

 15 times ; e, maxillae, labium and sternum of female. 



Considerable discussion followed relating to the advisability 

 of erecting monotypical families. The conclusion reached 

 was that generally it would be better to give isolated species 

 sub-family importance in the nearest related existing family. 



Mr. L,inell then gave an account of some observations 

 which indicate the identity of Megapenthes limbalis, Herbst, 

 and M. granulosus, Melsh., hitherto considered to be distinct 

 species. He had found these beetles in coitu on several occa 

 sions, and as only males of limbalis and females of granulosus 

 have been known previously, the identity of the two forms 

 was fully established. The males, having been first charac 

 terized, will give the name to the species. 



