LARVAE OF SOME WEST INDIAN BEETLES—BOVING 173 
Museum; Ancylonycha titanis Reitter, Ancylonycha morosa Water- 
house, and Ancylonycha diomphalia Bates, primarily because only one 
of these species, viz, ¢étanis, agrees generically with Ancylonycha 
mindanaona Brenske from Guam, of which the Museum has many 
specimens. The larvae of morosa and diomphalia, while congeneric 
inter se, are so different from ¢étanis and mindanaona that the genus 
Ancylonycha apparently must be split into two subgenera or possibly 
genera.’ 
SYNOPTIC KEY ® 
1. Mandibular stridulatory zone distinct, located near middle of ventro-exterior 
mandibular surface, oblique, composed of numerous densely set, minute, 
granular tubercles in no order and forming no pattern (fig. 2); galea 
with a strong seta-bearing dorsobasal tooth (PRC, fig. 5). [About 7 setae 
on each side along anterior margin of frons; proplegmata absent; epizygum 
and zygum absent; number of sensilla in front of crepis about 12 (fig. 1) ; 
basal article of labial palpus about as long as distal; septula (SHP, fig. 3) 
longitudinal with parallel sides; pali (PA, fig. 3) short, slightly hooked, 
in a row of 20 to 28 on each side, extending about half the length of 
tegilla in front of this patch of setae; preseptular setae absent. ] 
Melolontha melolontha Linnaeus ”® 
Mandibular stridulatory zone absent or not distinct; galea without 
Gorsopasall’ tooth se ee Peer ee ee ee eee 2 
2 (1). Pali either present and arranged in two oblique, posteriorly strongly 
diverging series, or in a pair of mustachelike patches, or absent____ 3 
Pali present, usually arranged in a single longitudinal row, or some- 
times in two or more longitudinal rows, on each side_-___---------_ 9 
Bae (24) Ya tael EP UTR 9 NS 2 6 ReMi SAP a Ae a al Na i call EE ee IC i el ee ANE Se 4 
AP AUTEN ENDS CNG gases ee es a a Ne cet le eA 5 
4 (3). Maxillary stridulatory teeth short, present in the number of about 6 
distinct and a few indistinct; proplegmata absent; heli 3 or 4, excep- 
tionally 5. [Stipes with a large membrancus prolongation between 
lacinia and galea on the dorsal side, a character discovered by Mura- 
yama; anal slit angulate, sagittally with a long cleft; either, in genus 
Apogonia, with pali arranged in two oblique posteriorly strongly di- 
verging series and anterior to these with scattered tegillar setae or, 
in genus Diplotaris, with pali arranged in a pair of mustachelike 
patches, and anterior to these with few or no tegillar setae.] 
Apogonia cupreoviridis Kolbe (Korea) 
A. cribricollis Burmeister (Dehra Dun, India) 
A, villosella Blanchard (Dehra Dun, India) 
Diplotaxis sordida Say (New Jersey) 
D. brevicollis LeConte (Colorado) 
7 For related remarks see Murayama, loc. cit., pp. 82, 86. 
8 Besides the strictly alternative characters in the key, others guiding and descriptive, 
- but not necessarily alternative, are given in brackets. 
® The following other species of the genus Melolontha have been described: M. virescens 
Brenske and furcicaudata Ancey, both from India, by J. C. M. Gardner, and incana 
Motschulsky, from Korea, by Joso Murayama. WM. virescens is mentioned as having 20—23 
pali on each side, furcicaudata about 27, and incana about 20. Pali not always extending 
in front of tegilla, but the other characters given by both authors in describing their species 
